The switch has three fan modules. Fan modules are hot-swappable. A powered switch should always have more than one operational fan. The switch can operate with two operational fans and one nonfunctional fan, but the failed fan should be replaced as soon as possible to avoid a service interruption due to a second fan fault.
Three fans are required for proper cooling.
Figure 1. Fan Module
Observe these guidelines when removing or installing a fan module:
Do not force the fan module into the slot. This can damage the pins on the switch if they are not aligned with the module.
A fan module that is only partially connected to the switch can disrupt the system operation.
The switch supports hot swapping of the fan module. You can remove and replace the module without interrupting normal switch operation.
Only trained and qualified personnel should be
allowed to install, replace, or service this equipment. Statement 1030
Installing a Fan
Pinch the fan
module release handle, and slide the module out.
replace the fan module within 5 minutes to avoid overheating the switch.
Install the fan
module in the fan slot, and firmly push it into the slot, applying pressure to
the end of the module, not the extraction handles. When correctly inserted, the
fan module is flush with the switch rear panel. When the fan is operating, a
green LED is on in the top left corner of the fan.
Do not reach
into a vacant slot when installing or removing a module. Exposed circuitry is
an energy hazard. Statement 206
Figure 2. Installing the Fan
Finding the Fan
Module Serial Number
If you contact
Cisco Technical Assistance regarding a fan module, you need to know the fan
module serial number. See the following illustration to find the serial number.